Allen-Bradley 150-F201NBR Module – 150 Series

Technical Dossier

Product Details And Specifications

Allen-Bradley 150 Series Technical Notes

The Allen-Bradley 150 Series, commercially designated as the SMC-Flex Smart Motor Controller, is a solid-state reduced-voltage motor starter platform manufactured by Rockwell Automation. It has accumulated a substantial installed base across global heavy industry sectors including petrochemical refineries, nuclear power auxiliary systems, offshore platforms, pulp and paper mills, and large-scale water treatment facilities. The 150 Series occupies the mid-to-high tier of Rockwell's motor control portfolio, positioned above the SMC-3 (150-C Series) and below full variable-frequency drive solutions, making it the preferred choice for applications requiring controlled acceleration, deceleration, and real-time motor protection without full speed regulation.

Rated from 3A to 1250A (covering motor ranges from fractional HP to 600 HP at 480V), the SMC-Flex supports six programmable control modes: Soft Start, Current Limit Start, Full Voltage Start, Preset Slow Speed, Linear Speed Acceleration, and Pump Control. Its dual-port DeviceNet and optional communication adapter architecture allows direct integration into Rockwell ControlLogix, CompactLogix, and legacy PLC-5 / SLC 500 control systems via standard backplane or network messaging.

The Evolution of 150 Series Architecture

The Allen-Bradley 150 Series traces its lineage to the early solid-state starter platforms of the 1980s. The original SMC-2 (catalog prefix 150-A) introduced thyristor-based soft-start capability but lacked onboard diagnostics or network connectivity. The subsequent SMC-Plus (150-B Series) added current-sensing feedback and rudimentary fault logging, establishing the foundation for closed-loop motor protection.

The SMC-Flex (150-C / 150-F Series), introduced in the late 1990s and refined through the 2000s, represented a generational shift: a modular architecture with a removable parameter module (RPM), a dedicated communication adapter slot, and a 16-character LCD operator interface. The 150-F prefix specifically denotes units with the full-featured control board supporting all six control modes and the complete protection suite (phase loss, ground fault, stall, jam, underload, thermistor input).

150 Series Full Catalog & Functionalities (SKU List)

The following catalog numbers represent verified, commonly stocked SKUs within the Allen-Bradley 150 Series SMC-Flex platform. Units are classified by functional role.

Smart Motor Controllers — Standard Frame (3A–97A)

• 150-C3NBD: 3A, 200–480V, DeviceNet, standard control, no bypass
• 150-C7NBD: 7A, 200–480V, DeviceNet, soft-start, phase-loss protection
• 150-C16NBD: 16A, 200–480V, DeviceNet, full protection suite enabled
• 150-C25NBD: 25A, 200–480V, DeviceNet, pump control mode capable
• 150-C37NBD: 37A, 200–480V, DeviceNet, linear speed acceleration mode
• 150-C43NBD: 43A, 200–480V, DeviceNet, current limit start mode
• 150-C60NBD: 60A, 200–480V, DeviceNet, preset slow speed mode
• 150-C85NBD: 85A, 200–480V, DeviceNet, full six-mode control
• 150-C97NBD: 97A, 200–480V, DeviceNet, thermistor input, jam/stall protection

Smart Motor Controllers — High-Current Frame (135A–1250A)

• 150-F135NBR: 135A, 200–600V, with bypass contactor, full protection suite
• 150-F180NBR: 180A, 200–600V, bypass contactor, DeviceNet ready
• 150-F201NBR: 201A, 200–600V, bypass contactor, six-mode control, ground fault
• 150-F251NBR: 251A, 200–600V, bypass contactor, linear acceleration, pump mode
• 150-F317NBR: 317A, 200–600V, bypass contactor, full diagnostic logging
• 150-F361NBR: 361A, 200–600V, bypass contactor, thermistor, underload protection
• 150-F480NBR: 480A, 200–600V, bypass contactor, high-inertia load capable
• 150-F625NBR: 625A, 200–600V, bypass contactor, large pump/compressor applications

Communication Adapter Modules

• 150-SM1: DeviceNet communication adapter for SMC-Flex, DIN-rail mount
• 150-SM2: Remote I/O (RIO) communication adapter, legacy PLC-5/SLC integration
• 150-SM3: Profibus DP adapter, European fieldbus installations
• 150-SM4: ControlNet adapter, high-speed deterministic network support

Accessories & Parameter Modules

• 150-PS3: Removable parameter module (RPM), stores all configuration parameters offline
• 150-SCIM1: Isolation module for 150 Series, used in high-leakage current environments

Quality Control for the 150 Series Range

Each 150 Series unit processed by DriveKNMS undergoes a structured verification protocol specific to the SMC-Flex architecture. Power section testing applies rated current (up to 201A for 150-F201NBR class units) through a resistive load bank to verify SCR firing symmetry across all three phases. Control board diagnostics confirm correct operation of all six control modes via the onboard LCD interface and parameter upload/download via the 150-PS3 removable parameter module.